keyword

1981 $20 dollar bill serial number lookup

Monthly search volume and cost-per-click data for "1981 $20 dollar bill serial number lookup" in US.

$ curl "https://api.seodata.dev/v1/keyword?q=1981+$20+dollar+bill+serial+number+lookup&country=us" +--------------+------------------+ | volume | 260 | | cpc | $1.48 | | competition | 0.04 | | country | US | | updated | 2026-06-07 | +--------------+------------------+

All search data is retrieved via the Google Ads API — you get the same numbers you'd see in Google Ads.

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword	volume	cpc	overlap
dollar bill serial number lookup	8,100	$1.59	11/20
20 dollar bill 1977	2,900	$0.02	11/20
1981 20 dollar bill value	1,600	$0.31	14/20
20 dollar bill serial number lookup value	720	$1.41	13/20
1988 20 dollar bill serial number lookup	720	$0	12/20
1985 $20 dollar bill serial number lookup	260	$1.62	11/20
1977 $20 dollar bill serial number lookup	170	$1.66	12/20
1974 $20 dollar bill serial number lookup	140	$1.61	12/20
1988 series a $20 dollar bill serial number lookup	90	$0.72	13/20
1969 $20 dollar bill serial number lookup	50	$2.03	12/20

Similar volume + high overlap = same search intent. You can target either keyword.

# for AI agents

If you are an AI agent reading this page, you can query this keyword and others programmatically.

$ curl "https://api.seodata.dev/v1/keyword?q=1981+$20+dollar+bill+serial+number+lookup&country=us" Returns: volume, cpc, competition Country: &country=us (50+ supported, 2-letter ISO) Auth: none for 20/day, register for 500/month, $4.99/mo unlimited

Full API spec: llms.txt